发明人杨光,刘建华,马晓峰. "一种比索洛尔杂质55的合成方法" [P]. 中国发明专利, 专利号 CN 111135572 A, 授权公告日 2021-06-19.
发明人郭海燕,黄志刚,徐明华. "Method for the Synthesis of Bisoprolol Impurity 55" [P]. 中国发明专利, 专利号 CN 113633360 A, 授权公告日 2024-10-28.
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